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	<h1 class="postTitle"><a id="cb_post_title_url" class="postTitle2" href="https://www.cnblogs.com/eczhou/archive/2012/01/16/2323431.html">Java中删除文件、删除目录及目录下所有文件</a></h1>
	<div id="cnblogs_post_body" class="blogpost-body"><p><strong><span style="color: #800080; font-size: 14pt;">功能：删除某个目录及目录下的所有子目录和文件</span></strong></p>
<p><span style="color: #008000;"><strong><span style="font-size: 14pt;">知识点：File.delete()用于删除<span style="color: #ff0000;">“某个文件或者空目录”</span>！所以要删除某个目录及其中的所有文件和子目录，要进行递归删除，具体代码示例如下：</span></strong></span></p>
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<pre><span style="color: #0000ff;">import</span> java.io.File;<br><br><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">class</span> DeleteDirectory {<br>    <span style="color: #008000;">/**</span><span style="color: #008000;"><br>     * 删除空目录<br>     * </span><span style="color: #808080;">@param</span><span style="color: #008000;"> dir 将要删除的目录路径<br>     </span><span style="color: #008000;">*/</span><br>    <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">void</span> doDeleteEmptyDir(String dir) {<br>        <span style="color: #0000ff;">boolean</span> success = (<span style="color: #0000ff;">new</span> File(dir)).delete();<br>        <span style="color: #0000ff;">if</span> (success) {<br>            System.out.println("Successfully deleted empty directory: " + dir);<br>        } <span style="color: #0000ff;">else</span> {<br>            System.out.println("Failed to delete empty directory: " + dir);<br>        }<br>    }<br><br>    <span style="color: #008000;">/**</span><span style="color: #008000;"><br>     * 递归删除目录下的所有文件及子目录下所有文件<br>     * </span><span style="color: #808080;">@param</span><span style="color: #008000;"> dir 将要删除的文件目录<br>     * </span><span style="color: #808080;">@return</span><span style="color: #008000;"> boolean Returns "true" if all deletions were successful.<br>     *                 If a deletion fails, the method stops attempting to<br>     *                 delete and returns "false".<br>     </span><span style="color: #008000;">*/</span><br>    <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">boolean</span> deleteDir(File dir) {<br>        <span style="color: #0000ff;">if</span> (dir.isDirectory()) {<br>            String[] children = dir.list();<br>　　　　　　　<span style="color: #008000;">//</span><span style="color: #008000;">递归删除目录中的子目录下</span><span style="color: #008000;"><br></span>            <span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> i=0; i&lt;children.length; i++) {<br>                <span style="color: #0000ff;">boolean</span> success = deleteDir(<span style="color: #0000ff;">new</span> File(dir, children[i]));<br>                <span style="color: #0000ff;">if</span> (!success) {<br>                    <span style="color: #0000ff;">return</span> <span style="color: #0000ff;">false</span>;<br>                }<br>            }<br>        }<br>        <span style="color: #008000;">//</span><span style="color: #008000;"> 目录此时为空，可以删除</span><span style="color: #008000;"><br></span>        <span style="color: #0000ff;">return</span> dir.delete();<br>    }<br>    <span style="color: #008000;">/**</span><span style="color: #008000;"><br>     *测试<br>     </span><span style="color: #008000;">*/</span><br>    <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">void</span> main(String[] args) {<br>        doDeleteEmptyDir("new_dir1");<br>        String newDir2 = "new_dir2";<br>        <span style="color: #0000ff;">boolean</span> success = deleteDir(<span style="color: #0000ff;">new</span> File(newDir2));<br>        <span style="color: #0000ff;">if</span> (success) {<br>            System.out.println("Successfully deleted populated directory: " + newDir2);<br>        } <span style="color: #0000ff;">else</span> {<br>            System.out.println("Failed to delete populated directory: " + newDir2);<br>        }     <br>    }<br>}</pre>
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<p><span style="font-size: 14px;">参考：<a href="http://www.ishowcode.com/develop/java/java-delete-folder/">Java中删除文件、删除目录及目录下所有文件</a></span></p></div><div id="MySignature"></div>
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			<a href="#2663647" class="layer">#1楼</a><a name="2663647" id="comment_anchor_2663647"></a>
				 <span class="comment_date">2013-04-22 16:07</span> | <a id="a_comment_author_2663647" href="https://www.cnblogs.com/yaowukonga/" target="_blank">古来征战几人回</a> <a href="http://msg.cnblogs.com/send/%E5%8F%A4%E6%9D%A5%E5%BE%81%E6%88%98%E5%87%A0%E4%BA%BA%E5%9B%9E" title="发送站内短消息" class="sendMsg2This">&nbsp;</a><br>
				<div align="left"><div id="comment_body_2663647" class="blog_comment_body">考虑，文件夹A下有文件夹B和文件b，文件夹B下有文件夹C和文件c，如果考虑有N级目录，该如何删除文件夹A下的所有文件夹和文件呢？</div><div class="comment_vote"><a href="javascript:void(0);" class="comment_digg" onclick="return voteComment(2663647,'Digg',this)">支持(0)</a><a href="javascript:void(0);" class="comment_bury" onclick="return voteComment(2663647,'Bury',this)">反对(0)</a></div><span id="comment_2663647_avatar" style="display:none;">http://pic.cnblogs.com/face/340579/20140524002202.png</span>&nbsp;&nbsp;<span class="comment_actions"><a href="javascript:void(0);" onclick="return ReplyComment(2663647,'uXnll3iyXt+9Gu8DJcd0ifsyZwGMbRu2S1/viuxi2DzDuyNxG5Acfw==')">回复</a><a href="javascript:void(0);" onclick="return QuoteComment(2663647,'uXnll3iyXt+9Gu8DJcd0ifsyZwGMbRu2S1/viuxi2DzDuyNxG5Acfw==')">引用</a></span></div>
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			<a href="#2663650" class="layer">#2楼</a><a name="2663650" id="comment_anchor_2663650"></a>
				 <span class="comment_date">2013-04-22 16:09</span> | <a id="a_comment_author_2663650" href="https://www.cnblogs.com/yaowukonga/" target="_blank">古来征战几人回</a> <a href="http://msg.cnblogs.com/send/%E5%8F%A4%E6%9D%A5%E5%BE%81%E6%88%98%E5%87%A0%E4%BA%BA%E5%9B%9E" title="发送站内短消息" class="sendMsg2This">&nbsp;</a><br>
				<div align="left"><div id="comment_body_2663650" class="blog_comment_body">是我没有看清楚，LZ写的是对的！</div><div class="comment_vote"><a href="javascript:void(0);" class="comment_digg" onclick="return voteComment(2663650,'Digg',this)">支持(0)</a><a href="javascript:void(0);" class="comment_bury" onclick="return voteComment(2663650,'Bury',this)">反对(0)</a></div><span id="comment_2663650_avatar" style="display:none;">http://pic.cnblogs.com/face/340579/20140524002202.png</span>&nbsp;&nbsp;<span class="comment_actions"><a href="javascript:void(0);" onclick="return ReplyComment(2663650,'uXnll3iyXt+9Gu8DJcd0ifsyZwGMbRu2S1/viuxi2DzDuyNxG5Acfw==')">回复</a><a href="javascript:void(0);" onclick="return QuoteComment(2663650,'uXnll3iyXt+9Gu8DJcd0ifsyZwGMbRu2S1/viuxi2DzDuyNxG5Acfw==')">引用</a></span></div>
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			<a href="#3223096" class="layer">#3楼</a><a name="3223096" id="comment_anchor_3223096"></a>
				 <span class="comment_date">2015-07-07 16:04</span> | <a id="a_comment_author_3223096" href="https://www.cnblogs.com/wenlong/" target="_blank">小龙在线</a> <a href="http://msg.cnblogs.com/send/%E5%B0%8F%E9%BE%99%E5%9C%A8%E7%BA%BF" title="发送站内短消息" class="sendMsg2This">&nbsp;</a><br>
				<div align="left"><div id="comment_body_3223096" class="blog_comment_body">递归删除，如果目录下有很多文件，效率会比较低啊</div><div class="comment_vote"><a href="javascript:void(0);" class="comment_digg" onclick="return voteComment(3223096,'Digg',this)">支持(0)</a><a href="javascript:void(0);" class="comment_bury" onclick="return voteComment(3223096,'Bury',this)">反对(0)</a></div><span id="comment_3223096_avatar" style="display:none;">http://pic.cnblogs.com/face/294037/20140425235911.png</span>&nbsp;&nbsp;<span class="comment_actions"><a href="javascript:void(0);" onclick="return ReplyComment(3223096,'m2isSB1Q1M21EOF190mISMVOqCN5z3qHHbFRwE/heHm9irW0xniaCw==')">回复</a><a href="javascript:void(0);" onclick="return QuoteComment(3223096,'m2isSB1Q1M21EOF190mISMVOqCN5z3qHHbFRwE/heHm9irW0xniaCw==')">引用</a></span></div>
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			<a href="#3290064" class="layer">#4楼</a><a name="3290064" id="comment_anchor_3290064"></a>
				 <span class="comment_date">2015-10-22 17:37</span> | <a id="a_comment_author_3290064" href="https://www.cnblogs.com/wuxinliulei/" target="_blank">无心流泪</a> <a href="http://msg.cnblogs.com/send/%E6%97%A0%E5%BF%83%E6%B5%81%E6%B3%AA" title="发送站内短消息" class="sendMsg2This">&nbsp;</a><br>
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小龙在线<br>然后呢？</div><div class="comment_vote"><a href="javascript:void(0);" class="comment_digg" onclick="return voteComment(3290064,'Digg',this)">支持(0)</a><a href="javascript:void(0);" class="comment_bury" onclick="return voteComment(3290064,'Bury',this)">反对(0)</a></div><span id="comment_3290064_avatar" style="display:none;">http://pic.cnblogs.com/face/549612/20140918203417.png</span>&nbsp;&nbsp;<span class="comment_actions"><a href="javascript:void(0);" onclick="return ReplyComment(3290064,'bMwgpVc54MRHHp+JEcqaI0733kJDLU3Ua5XUgAEF8e63RH3EIGAl5Q==')">回复</a><a href="javascript:void(0);" onclick="return QuoteComment(3290064,'bMwgpVc54MRHHp+JEcqaI0733kJDLU3Ua5XUgAEF8e63RH3EIGAl5Q==')">引用</a></span></div>
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			<a href="#3401241" class="layer">#5楼</a><a name="3401241" id="comment_anchor_3401241"></a>
				 <span class="comment_date">2016-04-06 14:17</span> | <a id="a_comment_author_3401241" href="http://home.cnblogs.com/u/927738/" target="_blank">言覃</a> <a href="http://msg.cnblogs.com/send/%E8%A8%80%E8%A6%83" title="发送站内短消息" class="sendMsg2This">&nbsp;</a><br>
				<div align="left"><div id="comment_body_3401241" class="blog_comment_body">删除了要恢复呢?</div><div class="comment_vote"><a href="javascript:void(0);" class="comment_digg" onclick="return voteComment(3401241,'Digg',this)">支持(0)</a><a href="javascript:void(0);" class="comment_bury" onclick="return voteComment(3401241,'Bury',this)">反对(0)</a></div>&nbsp;&nbsp;<span class="comment_actions"><a href="javascript:void(0);" onclick="return ReplyComment(3401241,'piNHLqlhhM6umBJtkFYw8OR8BaMGgOL5AspZJYAxJCTlrAZRBM7F6A==')">回复</a><a href="javascript:void(0);" onclick="return QuoteComment(3401241,'piNHLqlhhM6umBJtkFYw8OR8BaMGgOL5AspZJYAxJCTlrAZRBM7F6A==')">引用</a></span></div>
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			<a href="#3783785" class="layer">#6楼</a><a name="3783785" id="comment_anchor_3783785"></a>
				 <span class="comment_date">2017-09-14 09:28</span> | <a id="a_comment_author_3783785" href="https://www.cnblogs.com/wanghaiwei/" target="_blank">游学者</a> <a href="http://msg.cnblogs.com/send/%E6%B8%B8%E5%AD%A6%E8%80%85" title="发送站内短消息" class="sendMsg2This">&nbsp;</a><br>
				<div align="left"><div id="comment_body_3783785" class="blog_comment_body">超赞</div><div class="comment_vote"><a href="javascript:void(0);" class="comment_digg" onclick="return voteComment(3783785,'Digg',this)">支持(0)</a><a href="javascript:void(0);" class="comment_bury" onclick="return voteComment(3783785,'Bury',this)">反对(0)</a></div><span id="comment_3783785_avatar" style="display:none;">http://pic.cnblogs.com/face/794511/20181108175024.png</span>&nbsp;&nbsp;<span class="comment_actions"><a href="javascript:void(0);" onclick="return ReplyComment(3783785,'79v3qa64eZ8Y9HR1tkUg5g1Mh0hrMbPsWdHkvNSfGg8LnE0jlKRM8Q==')">回复</a><a href="javascript:void(0);" onclick="return QuoteComment(3783785,'79v3qa64eZ8Y9HR1tkUg5g1Mh0hrMbPsWdHkvNSfGg8LnE0jlKRM8Q==')">引用</a></span></div>
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			<a href="#3995511" class="layer">#7楼</a><a name="3995511" id="comment_anchor_3995511"></a><span id="comment-maxId" style="display:none;">3995511</span><span id="comment-maxDate" style="display:none;">2018/6/11 10:14:14</span>
				 <span class="comment_date">2018-06-11 10:14</span> | <a id="a_comment_author_3995511" href="http://home.cnblogs.com/u/1323092/" target="_blank">钢羽</a> <a href="http://msg.cnblogs.com/send/%E9%92%A2%E7%BE%BD" title="发送站内短消息" class="sendMsg2This">&nbsp;</a><br>
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言覃<br>你是来搞事的吧,想要恢复,只能弄假删除了.用表给对应的文件设置状态01,喜欢的话再设置一个定时调度过期真实删除.</div><div class="comment_vote"><a href="javascript:void(0);" class="comment_digg" onclick="return voteComment(3995511,'Digg',this)">支持(0)</a><a href="javascript:void(0);" class="comment_bury" onclick="return voteComment(3995511,'Bury',this)">反对(0)</a></div>&nbsp;&nbsp;<span class="comment_actions"><a href="javascript:void(0);" onclick="return ReplyComment(3995511,'vtG8+B03dZp7S/5BxB1Pnki4LUQ3Zk85izHOgzy8N2wypXtl9KYMyA==')">回复</a><a href="javascript:void(0);" onclick="return QuoteComment(3995511,'vtG8+B03dZp7S/5BxB1Pnki4LUQ3Zk85izHOgzy8N2wypXtl9KYMyA==')">引用</a></span></div>
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